An image forming apparatus includes a body a printing engine to perform an image forming operation, a waste toner withdrawal device to obtain waste toners generated during the image forming operation, and a waste toner treatment device to treat the waste toners obtained by the waste toner withdrawal device and introduced to the waste toner treatment device from the waste toner withdrawal device. The waste toner treatment device includes a waste toner discharging member, a heating portion to heat the waste toners within the heating portion, and a driving portion to move the heating portion along a longitudinal direction of the waste toner discharging member so as to form a waste toner solidified within the heating portion from the waste toners heated by the heating portion. The waste toner discharging member discharges the waste toner solidified within the heating portion outside of the heating portion.

An example device can include a reserve print materials container, an access port coupled to the reserve print materials container to receive, from a replenishment device, print materials directly to the reserve print materials container in-situ, and a main print materials container coupled to the reserve print materials container to receive print materials from the reserve print materials container.

A developer container includes a casing having a developer accommodating chamber and a waste-developer accommodating chamber, conveying member, a conveying-member accommodating unit, and a supporting member. The conveying member conveys waste developer in a longitudinal direction of the waste-developer accommodating chamber. The conveying-member accommodating unit accommodates the conveying member therein and has a first opening and a second opening. The first opening is provided in an upstream end portion and allows the waste developer to move from outside of the conveying-member accommodating unit to the inside of the conveying-member accommodating unit. The second opening allows the waste-developer to move from the inside of the conveying-member accommodating unit to the waste-developer accommodating chamber. The supporting member is provided on the casing. The supporting member supports the conveying-member accommodating unit such that the conveying-member accommodating unit is movable in directions perpendicular to the longitudinal direction relative to the casing.

A developer container includes a casing having a developer accommodating chamber and a waste-developer accommodating chamber, conveying member, a conveying-member accommodating unit, and a supporting member. The conveying member conveys waste developer in a longitudinal direction of the waste-developer accommodating chamber. The conveying-member accommodating unit accommodates the conveying member therein and has a first opening and a second opening. The first opening is provided in an upstream end portion and allows the waste developer to move from outside of the conveying-member accommodating unit to the inside of the conveying-member accommodating unit. The second opening allows the waste-developer to move from the inside of the conveying-member accommodating unit to the waste-developer accommodating chamber. The supporting member is provided on the casing. The supporting member supports the conveying-member accommodating unit such that the conveying-member accommodating unit is movable in directions perpendicular to the longitudinal direction relative to the casing.

A powder collecting device includes a collecting container and a ventilation passage. The collecting container is removably attachable to a housing of a processing apparatus including a powder processing unit, has one or more collecting openings through which heat-melting powder transported from the powder processing unit is collected, and includes an accommodation space capable of accommodating the collected powder. The ventilation passage is partitioned from the accommodation space of the collecting container. Airflow generated by an airflow generator passes through the ventilation passage. The ventilation passage extends in a longitudinal direction of the collecting container, and has an inlet through which the airflow is introduced and a ventilation hole formed in a downstream section of the ventilation passage in a direction of the airflow.

To provide an image forming device that can prompt a user to check whether a waste toner container is completely attached.

Resolution means The image forming device includes a housing, an access cover attached in an openable/closable manner to the housing, a waste toner container attachable to the housing with the access cover open, and a lock lever that locks the waste toner container and the housing. The access cover includes a protruding portion protruding toward an interior of the housing. The lock lever transitions between a locked state and a pressed state of being pressed by the waste toner container, and, when in the pressed state, moves to a preventing position at which the lock lever blocks the protruding portion and prevents the access cover from closing, and, when in the locked state, moves to a retracted position at which the lock lever does not block the protruding portion.

To provide an image forming device that can prompt a user to check whether a waste toner container is completely attached.

Resolution means The image forming device includes a housing, an access cover attached in an openable/closable manner to the housing, a waste toner container attachable to the housing with the access cover open, and a lock lever that locks the waste toner container and the housing. The access cover includes a protruding portion protruding toward an interior of the housing. The lock lever transitions between a locked state and a pressed state of being pressed by the waste toner container, and, when in the pressed state, moves to a preventing position at which the lock lever blocks the protruding portion and prevents the access cover from closing, and, when in the locked state, moves to a retracted position at which the lock lever does not block the protruding portion.

A toner-and-developer supply device includes a toner container to contain toner and a developer container to contain a developer. The toner container has a toner discharge port, and the toner container is rotatable about a rotational axis to transport the toner toward the toner discharge port. The developer container has a toner-and-developer discharge port. The developer container is rotatably coupled to the toner container to transport the developer toward the toner-and-developer discharge port when the toner container rotates in a given direction relative to the developer container.

A toner conveying device for conveying toner, comprising: a first conveying portion; and a second conveying portion conveying the toner conveyed from the first conveying portion. The first conveying portion further includes: a first screw which includes a first rotation shaft and a first blade portion, the first screw including an engaging portion and a first protruded portion on a first end portion; and a first conveying passage forming member having a first inner wall face which forms a first conveying passage. The second conveying portion includes: a second screw which includes a second rotation shaft and a second blade portion, the second screw including an engaged portion and a second protruded portion on a second end portion; and a second conveying passage forming member having a second inner wall face which forms a second conveying passage, and which is connected with the first conveying passage forming member.

A toner conveying device for conveying toner, comprising: a first conveying portion; and a second conveying portion conveying the toner conveyed from the first conveying portion. The first conveying portion further includes: a first screw which includes a first rotation shaft and a first blade portion, the first screw including an engaging portion and a first protruded portion on a first end portion; and a first conveying passage forming member having a first inner wall face which forms a first conveying passage. The second conveying portion includes: a second screw which includes a second rotation shaft and a second blade portion, the second screw including an engaged portion and a second protruded portion on a second end portion; and a second conveying passage forming member having a second inner wall face which forms a second conveying passage, and which is connected with the first conveying passage forming member.